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The waste water is acidic

Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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The waste water is acidic
Catalytic Oxidation of Dyeing Wastewater by Copper Oxide ...
Catalytic Oxidation of Dyeing Wastewater by Copper Oxide ...

31/10/2020, · The, dyeing, industry is one of the seriously water-polluted industries in China. The amount of, wastewater, generated from such industry is relatively large, and most of the, dye, in the, wastewater, is toxic, carcinogenic and hard to be biodegraded (Feng et al. 2012; Li et al. 2019).

Textile Dyeing Wastewater Treatment - IntechOpen
Textile Dyeing Wastewater Treatment - IntechOpen

process, the average dyeing rate is more than 90%. It means that the residual dyeing rate in finishing ,wastewater, is about 10%, which is the main reason of contamination. According to the different dyes and process, the chroma is 200 to 500 times higher than before. pH is another factor of the dyeing ,wastewater, .

POLICY BRIEF
POLICY BRIEF

Among these, the most problematic dyes are the ones used widely, brightly coloured, water soluble, reactive, disperse, acidic, and metal complexed. The textile wastewater effluent contains odour, colour, high amounts of chemical reagents, suspended and dissolved solids, high BOD and COD, causing damage to the environment and human health.

02401 - A NEW LOOK AT INDUSTRIAL WATER SYSTEM FOULING ...
02401 - A NEW LOOK AT INDUSTRIAL WATER SYSTEM FOULING ...

maintained constant by the addition of ,dilute hydrochloric acid, or ,dilute, sodium hydroxide. A range of pH values (3.0 to 9.0) was studied. During the precipitation experiments the solutions were stirred continuously at constant stirring speed (--350 evolutions per minute) with a Teflon

Chlorine acid | Synonim
Chlorine acid | Synonim

Hypochlorous ,acid, (HOCL) is the most effective disinfectant in the ,chlorine, family available in ,dilute, solution. It is suggested that HOCL is 80 to 120 times more efficacious than sodium hypochlorite.5...

chlorine concentration for disinfection - Newswirl
chlorine concentration for disinfection - Newswirl

Copper(II)chloride (CuCl2) is used as a cathalyser during this so-called ‘Deaconprocess’: 4HCl + O2 -> 2H2O + 2Cl2 Finally, ,chlorine, can be produced by means of molten salts electrolysis and, mainly in laboratories, by means of ,hydrochloric acid, and manganese dioxide oxidation: MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2 When gaseous ,chlorine, is added to water the following hydrolysis reaction takes ...

(PDF) Textile Dyeing Wastewater Treatment | Mustafa ...
(PDF) Textile Dyeing Wastewater Treatment | Mustafa ...

Fabric printing and dyeing ,wastewater, It is adjusted for the fabric printing and dyeing ,wastewater,, including bleaching, mercerization, dyeing, resin processing, washing, drying and so on. The requirements using BPT (best practical control tech.) to treat the fabric printing and dyeing ,wastewater, has been shown in Table 6 (“Discharge standard of water pollutants for dyeing and finishing of textile industry”).

A PROCESS FOR PURIFYING IMPOTABLE WATER AND WASTEWATER …
A PROCESS FOR PURIFYING IMPOTABLE WATER AND WASTEWATER …

A process for treating ,wastewater, characterised by admixing with the ,wastewater, a solution consisting of hypochlorous ,acid, substantially free of ionic impurities ,containing, at least 0.5 percent by weight of HOCl and having a pH of less than 3, to prepare disinfected ,wastewater, having substantially no available ,chlorine, content.

Treatment of dyeing wastewater by combined sulfate radical ...
Treatment of dyeing wastewater by combined sulfate radical ...

1/1/2021, · Physicochemical characteristics of dyeing ,wastewater, are provided in Table 1. It can be observed from the table that dissolved solid concentration is 2104 mg/L. Higher dissolved solid concentration in the ,wastewater, is a favourable condition for electrochemical treatment of ,wastewater,.

Textile dyeing industry an environmental hazard
Textile dyeing industry an environmental hazard

They may be are very toxic and may have a high impact on the ,wastewater, quality. Natural dyestuffs require large quantities of water for dyeing. (Almost equal to or double that of the fiber’s own weight).

Study of Fenton Oxidation Process on Dyeing Wastewater and ...
Study of Fenton Oxidation Process on Dyeing Wastewater and ...

Synthetic, dyeing wastewater, . The composition and characteristics of synthetic, wastewater, is given in table 1. Four different dyes were used individually to prepare, wastewater, of each, dye., The dyes used were: Colocid Rhodamine B Conc, (acidic dye),, Colocid Yellow FG (reactive, dye),, Coralene Yellow C4G (disperse, dye), and Corafast Blue G (azo, dye).

Textile dyeing and textile wastewater treatment ...
Textile dyeing and textile wastewater treatment ...

Since non-polar dyes are primarily used in supercritical CO2 dyeing further development is required to enhance the dyeing of natural fibers with ionic dyes such as acid dyes or reactive dyes because the affinity of natural textiles with dyes occurs by chemical (covalent bonds) interactions or fixed by physical (van der waals) forces.20-21 Kraan et al. (2003) reported four factors that influence the role of …

Ion Exchange Softeners and Dealkalizers – Water Technology ...
Ion Exchange Softeners and Dealkalizers – Water Technology ...

15/5/2017, · Strong ,acid, cation resins contain a sulfonic ,acid, group on the exchange site. They are capable of removing all cations (positively charged ions) associated with strong and weak ,acid, salts. These resins are used in a wide variety of applications, but are commonly found in sodium ion exchangers (water softeners) used for routine hardness removal, hydrogen dealkalizers, and for cation …

ENGINEERING PROPERTIES OF SOIL CONTAMINATED WITH …
ENGINEERING PROPERTIES OF SOIL CONTAMINATED WITH …

The silk, dyeing, liquid effluents have the most serious impacts, since discharged wastewater contains a fairly high proportion of chemical dyes[2,7]. In the process of silk dyeing, various chemicals such as sulphonic acid, syndet (synthetic detergents) acetic acid, phenyl phenol, benzoic acid, phenyl methyl carbinol, common salts, wetting agent,

CN102531226A - Method for treating acidic dye printing and ...
CN102531226A - Method for treating acidic dye printing and ...

The invention discloses a method for treating ,acidic, dye printing and dyeing ,wastewater,, which belongs to the field of ,wastewater, treatment. The method comprises the steps of (1) filtering collected ,acidic, printing and dyeing ,wastewater, through a screen, then enabling the ,acidic, printing and dyeing ,wastewater, to enter a regulation tank, and using alkali waste to regulate the pH value of the ...

Decolorization of Dyeing Wastewater Using Polymeric ...
Decolorization of Dyeing Wastewater Using Polymeric ...

29/2/2012, · The ,wastewater, produced by a reactive dyeing contains [2,3]: (i) hydrolyzed reactive dyes not fixed on the substrate, representing 20-30% of the reactive dyes applied (on average 2 g/L) (this residual amount is responsible for the coloration of the effluents and cannot be recycled); (ii) dyeing auxiliaries or organic substances, which are non-recyclable and responsible for the high BOD/COD of ...

Textile dyeing and textile wastewater treatment ...
Textile dyeing and textile wastewater treatment ...

Since non-polar dyes are primarily used in supercritical CO2 ,dyeing, further development is required to enhance the ,dyeing, of natural fibers with ionic dyes such as acid dyes or reactive dyes because the affinity of natural textiles with dyes occurs by chemical (covalent bonds) interactions or fixed by physical (van der waals) forces.20-21 Kraan et al. (2003) reported four factors that influence the role of supercritical CO2 ,dyeing, …

Ozonation of Textile Dyeing Wastewater — A Review
Ozonation of Textile Dyeing Wastewater — A Review

1 to 20 % of dyes are released along the ,wastewater, which contribute to the colour [33]. It is observed that ,wastewater, from many textile units are less biodegradable (BOD/COD<0.3) since most of the

IS 3025 (Part 34): Method of Sampling and Test (Physical ...
IS 3025 (Part 34): Method of Sampling and Test (Physical ...

of water. Add 100 ml of concentrated ,hydrochloriC acid, and ,dilute, to 1 litre. 2.3.4 Procedure 2.3.4.1 Treatment of un distilled samples - If necessary, remove residual ,chlorine,. Add 1 ml of zinc sulphate solution to 100 ml of sample and mix thoroughly, Add 0'4 to 0'5 ml of 6 N sodium

METHOD 9014 CYANIDE IN WATERS AND EXTRACTS USING ...
METHOD 9014 CYANIDE IN WATERS AND EXTRACTS USING ...

7.3.4 Pyridine-barbituric ,acid, reagent, C 5H 5N•C 4H 4N 2O 3 - Place 15 g of barbituric ,acid, in a 250-mL volumetric flask and add just enough water to wash the sides of the flask and wet the barbituric ,acid,. Add 75 mL of pyridine and mix. Add 15 mL of concentrated ,hydrochloric acid, (HCl), mix, and cool to room temperature. ,Dilute, to 250 mL with water.

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